confine vs bound

confine is not a noun while bound is a noun.

Word	Noun	Adjective	Verb	Adverb
confine	No	No	Yes	No
bound	Yes	Yes	Yes	No

As verbs, confine and bound are synonyms defined as:

Other synonyms of confine include limit, restrict, throttle, trammel.

As verbs, bound is a hyponym of confine; that is, bound is a word with a more specific, narrower meaning than confine:

Other hyponyms of confine include border, embank, rail, rail in, box in, box up, frame.

confine (noun)	bound (noun)
	a light, self-propelled movement upwards or forwards
	the greatest possible degree of something
	the line or plane indicating the limit or extent of something
	a line determining the limits of an area

confine (adjective)	bound (adjective)
	confined by bonds
	secured with a cover or binding; often used as a combining form
	held with another element, substance or material in chemical or physical union
	confined in the bowels
	headed or intending to head in a certain direction; often used as a combining form as in `college-bound students'
	bound by an oath
	covered or wrapped with a bandage
	bound by contract
	(usually followed by `to') governed by fate

confine (verb)	bound (verb)
place limits on (extent or amount or access)	place limits on (extent or amount or access)
to close within bounds, or otherwise limit or deprive of free movement	spring back; spring away from an impact
prevent from leaving or from being removed	move forward by leaps and bounds
deprive of freedom; take into confinement	form the boundary of; be contiguous to
close in